3
MCQ (Single Correct Answer)
What will be the molarity of a solution, which contains 5.85 g of $\mathrm{NaCl}(s)$ per 500 mL ?
A
$4 \mathrm{~mol} \mathrm{~L}^{-1}$
B
$20 \mathrm{~mol~L}^{-1}$
C
$0.2 \mathrm{~mol} \mathrm{~L}^{-1}$
D
$2 \mathrm{~mol~L}^{-1}$
4
MCQ (Single Correct Answer)
If 500 mL of a 5 M solution is diluted to 1500 mL , what will be the molarity of the solution obtained?
A
1.5 M
B
1.66 M
C
0.017 M
D
1.59 M
5
MCQ (Single Correct Answer)
The number of atoms present in one mole of an element is equal to Avogadro number. Which of the following element contains the greatest number of atoms?
A
4 g He
B
46 g Na
C
0.40 g Ca
D
12 g He
6
MCQ (Single Correct Answer)
If the concentration of glucose $\left(\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6\right)$ in blood is $0.9 \mathrm{~g} \mathrm{~L}^{-1}$, what will be the molarity of glucose in blood?
A
5 M
B
50 M
C
0.005 M
D
0.5 M
7
MCQ (Single Correct Answer)
What will be the molality of the solution containing 18.25 g of HCl gas in 500 g of water?
A
0.1 m
B
1 M
C
0.5 m
D
1 m